Menu System Tools/Software Updater not working after Lubuntu upgrade from 16.04 to 18.04

[Colin Law]

On Fri, 17 Aug 2018 at 14:43, grasso <grasso at deds.nl> wrote:
>
> Dear mailing list members,
>
> Hopefully I can get support for below issue.
>
> I recently upgraded from Lubuntu 16.04 to 18.04 and did not find any issues on applications I previously used.
> Unfortunately now Software Updater is not working.
>
> Menu System Tools/Software Updater shows update information but does not update:
> After clicking on Install Now the Updater screen will be shown only for a few seconds.
>
> I used LXTerminal to be able to show error message shown below.
> Update error after trying to update using /usr/bin/update-manager
>
> cp-admin at cpadmin-PX707AA-ABH-SR1409NL-NL520:/usr/bin$ cd /usr/bin
> cp-admin at cpadmin-PX707AA-ABH-SR1409NL-NL520:/usr/bin$ update-manager
>
> (update-manager:4944): GLib-GIO-CRITICAL **: 11:46:57.955: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed

When you run it in the terminal does it popup any windows? If so then
what do you see there?

Colin